SKU: 47532467212

Neptune Systems Apex- Flow Monitoring Kit – FMK

Sale price$161.55 Regular price$179.50
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Description

Neptune Systems Apex- Flow Monitoring Kit – FMKFlow Monitoring Kit FMK Kit Includes FMM (Fluid Monitoring Module) The FMM (Fluid Monitoring Module) is a module that connects to any Apex (Apex(2016), Apex Classic, Apex Lite, Apex Jr.) via its AquaBus port providing four multi function monitoring ports that can be used for flow sensors, water level sensors, leak detections sensors and possibly future products as well. 1 Flow Sensor (FS 100) This flow sensor connects to the FMM, monitors the flow of

Flow Monitoring Kit – FMK

Kit Includes
– FMM (Fluid Monitoring Module)
The FMM (Fluid Monitoring Module) is a module that connects to any Apex (Apex(2016), Apex Classic, Apex Lite, Apex Jr.) via it’s AquaBus port providing four multi-function monitoring ports that can be used for flow sensors, water-level sensors, leak detections sensors and possibly future products as well.

– 1″ Flow Sensor (FS-100)
This flow sensor connects to the FMM, monitors the flow of water through the device, and then reports it back to your Apex via the FMM. This sensor is most often used to measure the flow in the main return line of a standard-sized aquarium. The FS-100 will work with flow rates from 150-1500 gph.

– Two 1/2″ Flow Sensors (FS-50)
This flow sensor connects to the FMM, monitors the flow of water through the device, and then reports it back to your Apex via the FMM. Two of these are included in the FMK. These sensors are perfect for attaching to devices such as media reactors, biopellet reactors, etc. The FS-50 will work with flow rates from 30-250 gph.

– Two 1″ Unions
To connect your FS-100 Flow sensor, Neptune Systems has included in the FMK, two 1″ BSPT -> 1″ Slip PVC Unions.

– Two 1/2″ Adapters
To connect your two FS-50 Flow sensors, Neptune Systems has included in the FMK, two 1/2″ BSPT -> 1/2″ Slip PVC Adapters.

Measuring the flow of your aquarium’s main return pump is an incredibly useful piece of information. The key benefit would be to have the Apex notify you the instant the flow stops for any reason — usually the result of a failed or faulty pump. Furthermore, an indication of a reduced flow rate could be used to determine that the pump or the lines are dirty or are becoming clogged with algae, debris, animals, or the growth of organisms inside your plumbing.

Auxiliary pumps on reactors and the like are very handy applications for the FMM. Place a flow sensor on a device like a carbon/gfo reactor and it serves many purposes. First off, you will know if your pump is not on or is faulty. Next, you can easily fine-tune the flow into the reactor by watching the dashboard tile on your Apex. Finally, you can know when the reactor is becoming clogged with detritus or possibly channeling has occurred by an alert on your Apex or by monitoring your dashboard.

Put a flow sensor inline to your device, plug it in to the FMM, and see exactly the flow rate of the water (any aquarium fluid really) going through that sensor. The industrial-grade flow sensors use either a turbine or paddle-wheel mechanism (depending on the model) to measure the flow.

With the FMK – Fluid Monitoring Kit you get one 1″ Flow Sensor and unions as well as two 1/2″ Flow Sensors with adapter fittings.

The FMK comes with three flow sensors but the FMM Module has a total of four ports. This means you have one port free to use for another purpose. Buy an additional flow sensor (sold separately, available also in 2″ and 1/4″ sizes), optical sensor or leak detection sensor and add even more functionality!
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 47532467212

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Draper, US
★★★★★ 5
Nice, Soft and Comfortable Tracksuit
First thing my son said when he put it on and the quarter zip was down was that he felt like Paulie Walnuts off The Sopranos. It cracked me the heck up. With the collar that kind of butterflies out, but still stylish. This is a nice and quality tracksuit. It is made of soft polyester and the spandex makes it stretchy. It fits true to size. It fits loosely so you have some room to move around. I got this for my son as he had no athletic type clothes to wear when it gets cold. It is kind of a good thing that the material is not heavy, but it generates heat and is perfect for colder weather. you can't wear it when it is in the mid-70's or so unless you are just a cold natured person. Wearing a T-Shirt under it is great. The tracksuit is perfect to wear to sporting events, a sports bar or shopping on a spring or fall day. The pants fit well and are the proper length. My son is 6' and a buck sixty-five. Fits him like a glove and it still would if he were heavier. The elastic waist is nice and the cords are not uncomfortable like some can be. I recommend this product.
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Reviewed in the United States on November 28, 2025
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Battle Creek, US
★★★★★ 5
Lexiart Golf Quarter-Zip Track Set - Cozy Remote Work Uniform
Fabric keeps basement office warm—zipper vents when needed. Looks polished on video calls, comfy all day. Sun protection bonus for outdoor breaks. Fits well and I like the color.
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Reviewed in the United States on December 20, 2025
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Rebekah Hampton
West Palm Beach, US
★★★★★ 5
The perfect fit!
Color: Dark Grey, Size: Large
Great stretchy material and extremely soft and comfortable!
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Reviewed in the United States on January 13, 2026
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Osman Bhuyan
San Leandro, US
★★★★★ 5
very good quality
Color: Brown, Size: Large
good qualities
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Reviewed in the United States on April 26, 2026
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Amazon Customer
Draper, US
★★★★★ 4
Fit well
Color: Black, Size: Medium
Happy with it.
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Reviewed in the United States on August 25, 2025

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